Hydros Water Level Sensor - Hydros
Buy now, pay later
Split your purchase into smaller payments with the provider you prefer. Pick your plan at checkout.
Checking out with Shop Pay? The Shop Pay screen only offers Shop Pay Installments. To pay with PayPal, Klarna, or Affirm, select Check out as guest to see every payment option, or use the PayPal button in your cart.
Shop Pay Installments
- 4 interest-free payments every 2 weeks on orders from $50 to $999.99
- 2 interest-free payments on orders from $35 to $50
- Monthly plans on orders from $150
- Check out with Shop Pay, then choose an installment plan
Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. Monthly plans may include interest (0–36% APR). CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.
Learn more about Shop Pay InstallmentsPayPal Pay Later
- Pay in 4: 4 interest-free payments every 2 weeks on purchases from $30 to $1,500
- Pay Monthly: 3 to 24 monthly payments on purchases from $49 to $10,000
- Select PayPal in your cart or at checkout, then choose Pay Later
Pay in 4 is available to consumers upon approval and is not currently available to residents of MO. Pay Monthly is subject to consumer credit approval, with a fixed APR of 9.99–35.99%. The lender for Pay in 4 is PayPal, Inc. (NMLS #910457). The lender for Pay Monthly is WebBank.
Learn more about PayPal Pay Later
Klarna
- Pay in 4: 4 interest-free payments every 2 weeks on orders of $35 or more
- No interest or fees when you pay on time
- Choose Klarna as your payment method at checkout
Klarna Pay in 4 is subject to approval and isn't available in Hawaii, U.S. territories (excluding Puerto Rico), or for APO/FPO/DPO addresses. Late fees may apply.
Learn more about Klarna
Affirm
- Pay in 4: 4 interest-free payments every 2 weeks on eligible orders from $50
- Monthly plans with rates from 0–36% APR based on credit
- No late fees or hidden fees
- Choose Affirm as your payment method at checkout
Payment options through Affirm are provided by these lending partners: affirm.com/lenders. Your rate will be 0–36% APR based on credit and is subject to an eligibility check. Affirm Pay in 4 is 0% APR. Options depend on your purchase amount and may vary by merchant. A down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Financing Law license.
Learn more about AffirmUPC: 4714041212440
Goes well with:
Ships Today
Order in the next 14h 00m
to get your supplies on the way today.
90 Day Returns
Reef Guard Covered
Ships Overnight
Orders Over $399*
Expert Support
We've got your back!
The HYDROS Water Level Sensor is an optical liquid-level detector built specifically for the HYDROS ecosystem. It plugs directly into any Sense Port on a HYDROS controller — no external power supply required — and communicates water presence or absence to the controller for use in rules, alerts, and automation routines. The GX12 aviation-style connector preserves the IP65 dust-tight and water-spray rating of the HYDROS Control unit, so adding a sensor does not compromise the controller's environmental protection.
The sensor's physical design keeps installation flexible and low-profile. The sensing body is roughly ¾" in diameter and just over half an inch thick, while the magnetic coupling side measures only ¼" thick. Together, the two halves clamp onto container or sump walls up to ½" thick — glass, acrylic, painted, or tinted. Because the sensor is fully optical with no moving parts, there is nothing to jam, corrode, or wear out over time. It functions in ambient light or total darkness, so placement inside a closed aquarium stand or inside an opaque dosing container is not an issue.
The sensor's versatility comes from how HYDROS rules can interpret its signal. A single sensor can act as a high-water or low-water trigger. A pair of sensors can form a complete dual-sensor ATO system — one marking the refill threshold, one acting as an overflow safeguard. Placed inside dosing containers, they can push a notification when a solution runs low. They can also be used to cut power to a pump or return line when water drops below a safe operating level, protecting equipment from running dry. The 98" cord provides enough reach for most common sump and stand configurations.
The HYDROS Water Level Sensor is manufactured by AutoAqua — makers of the Smart ATO Micro — in Taiwan, and is sold as an official HYDROS accessory. CoralVue has tested and validated compatibility with the HYDROS platform and backs the sensor with a one-year limited warranty from the date of purchase. It is suitable for both freshwater and saltwater aquariums.
Overview
Sense. Alert. Automate.
A compact, optical water-level sensor that integrates directly with the HYDROS Control platform to monitor liquid levels and trigger automated responses.
Magnetic, No-Tool Mounting
- Optical eye and magnet side clamp onto walls up to ½" thick
- Compatible with clear, tinted, and painted surfaces
- Repositionable without adhesives or brackets
Plug-and-Play HYDROS Integration
- Connects to any Sense Port on a HYDROS controller
- GX12 aviation-style connector preserves IP65 controller rating
- No external power source required
Versatile Level Monitoring
- Use as a high-level or low-level trigger in HYDROS rules
- Supports dual-sensor ATO setups with overflow protection
- Works inside dosing containers, ATO reservoirs, and sumps
Specifications
HYDROS WATER LEVEL SENSOR
- Sensor Diameter
- 0.75"
- Sensor Thickness
- 0.55"
- Magnet Mount Thickness
- 0.25"
- Cord Length
- 98"
- Max Mounting Surface Thickness
- 0.5"
- Connector Type
- GX12 aviation-style
- Controller Interface
- HYDROS Sense Port
- External Power Required
- No
- Moving Parts
- None
- Mount Type
- Magnetic
- Compatible Water Types
- Freshwater and saltwater
- Operates in Darkness
- Yes
- Manufacturer
- AutoAqua (Taiwan)
- Warranty
- 1 year from date of purchase